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What's the difference between backtracking and depth first search?
...recursion tree.. Take any example that uses backtracking, like permuting a string of characters, there is no logical tree (no implicit tree) whatsoever regarding to the problem but we do have a recursion tree that models the incremental string building process. As for pruning, that's the pruning don...
Draw in Canvas by finger, Android
...nClick(DialogInterface dialog, int whichButton) {
String name= input.getText().toString();
Bitmap bitmap = mv.getDrawingCache();
String path = Environment.getExternalStorageDirectory().getAbsolutePath();
...
How do I replace all line breaks in a string with elements?
...ional note: str.replace("\n", '<br />') (first argument is a regular string) will replace only first occurrence.
– Serge S.
Apr 15 '13 at 20:49
19
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Why is there an unexplainable gap between these inline-block div elements? [duplicate]
...o the elements "inline" properties, the same as spacing between words in a string of text in your HTML markup. This is why removing white-space in the markup also works.) The easiest fix is to just float the container. (eg. float: left;) On another note, each id should be unique, meaning you can't u...
What is the difference between NULL, '\0' and 0?
... with pointers. However you may see something similar to this code:
if (!*string_pointer)
checks if the string pointer is pointing at a null character
if (*string_pointer)
checks if the string pointer is pointing at a non-null character
Don't get these confused with null pointers. Just becaus...
Simple way to transpose columns and rows in SQL?
...ate the list of items to UNPIVOT and PIVOT. This is then added to a query string to be executed. The plus of the dynamic version is if you have a changing list of colors and/or names this will generate the list at run-time.
All three queries will produce the same result:
| NAME | RED | GREEN | BL...
Remove last character of a StringBuilder?
When you have to loop through a collection and make a string of each data separated by a delimiter, you always end up with an extra delimiter at the end, e.g.
...
Convenient C++ struct initialisation
...t;iostream>
#include <filesystem>
struct hello_world {
const char* hello;
const char* world;
};
int main ()
{
hello_world hw = {
.hello = "hello, ",
.world = "world!"
};
std::cout << hw.hello << hw.world << std::endl;
return 0;
}...
How can I pretty-print JSON using Go?
...o turn into JSON. The question also mentions pretty-printing just any JSON string, and that's what I was trying to do. I just wanted to pretty-log some JSON from a POST request (specifically a CSP violation report).
To use MarshalIndent, you would have to Unmarshal that into an object. If you need...
Single vs double quotes in JSON
...
JSON syntax is not Python syntax. JSON requires double quotes for its strings.
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